Personally i absolutely loved them. Controlling squads and defending/attacking objectives and stuff, and being able to switch control yourself, it was great, and a very fresh bit of gameplay from the usual fare. The AI seemed kinda shit though, i think i did like 80% of the work myself. Also liked how the maps were familiar (mostly).

I just wish there were more of them. Really hoping Treyarch turns this into a separate gamemode in the next game (like Survival i guess), and maybe adds coop support.